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Introduction to Linux - A Hands on Guide

This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.

The linux kernel will need to use PAE to address more than about 3GB of memory in practice (try running 'free' with PAE turned off and you will see some of your 4GB disappear). That doesn't mean that a binary with 32-bit pointers might not run faster than a binary of the same program with 64-bit pointers, but using 4GB as your cut-off is somewhat arbitrary.

Well, usually I work with the range: 2GB -> 4GB -> 8GB, I have only two computers with 32, almost all has 8. Of course, I talk about my own computers.

Just to share my experience with 4.14.x. I have used .0, .1, .2, .3 and .4; all built using my 4.13.x config with no changes. .0 - .3 would crash during the first boot after installing the kernel, but never again until installing and booting a new kernel. .4 has not crashed for me in four boots, even during the first boot. The biggest difference I can think of between .3 and .4 is that I fixed all of my custom udev rules that it complained about.

I run Slackware 14.2 32-bit with 16GB DDR3 RAM and a Phenom II x2 555 unlocked to x4. For booting kernels I use GRUB and I don't use an initrd.

Just booted again, no problem, and I checked my udev version is 182-i486-7